diff --git a/lib/bson/types/object_id.rb b/lib/bson/types/object_id.rb
index afbc128397..6bfb7dce58 100644
--- a/lib/bson/types/object_id.rb
+++ b/lib/bson/types/object_id.rb
@@ -116,13 +116,6 @@ def to_a
       @data.dup
     end
 
-    # Returns the object id as a single element in an array for use with Kernel#Array
-    #
-    # @return [Array]
-    def to_ary
-      [ self ]
-    end
-
     # Given a string representation of an ObjectId, return a new ObjectId
     # with that value.
     #
diff --git a/test/bson/object_id_test.rb b/test/bson/object_id_test.rb
index 78f93ea184..2d8a2b6d52 100644
--- a/test/bson/object_id_test.rb
+++ b/test/bson/object_id_test.rb
@@ -136,9 +136,13 @@ def test_as_json
     assert_equal({"$oid" => id.to_s}, id.as_json)
   end
 
-  def test_to_ary
+  def test_object_id_array_flatten
     id = ObjectId.new
-    assert_equal [id], id.to_ary
-    assert_equal Array(id), id.to_ary
+    assert_equal [ id ], [[ id ]].flatten
+  end
+
+  def test_object_id_array_flatten_bang
+    id = ObjectId.new
+    assert_equal [ id ], [[ id ]].flatten!
   end
 end